Mach Audio System amp issue

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Jul 21, 2008 | 07:27 PM

West Coast Broncos

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Joined: Jun 2007

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From: Klamath Falls, OR

Mach Audio System amp issue

I am having an issue with the stereo in our 97 Expy. It has the Mach Audio System and has always sounded great until the other day. It seems that the it has lost it's bass.

I talked to a guy that has what seems to be the same system in his Mustang. He said that he had the same problem and that his has two amps and that he had to hit the reset on the bass amp.

I could not find any info on this in the audio book that came with the car so I took it by the dealer. The guy that looked at it could not find anything, but they did admit that no one there had ever worked one before.

So here is the question. Has anyone here ever had this issue and if so is there really a reset on the bass amp?

I hate to replace it as it had a great sound before the bass quit.

Jul 21, 2008 | 10:23 PM

madsonp

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Joined: Dec 2005

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From: Billings, Montana

There's no reset that I know of. If you have the rear sub the amp is mounted on the speaker housing. You might check your fuses. See page 139 of your owners manual. If you don't have your manual, here's a link to it. http://www.motorcraftservice.com/?li.../97exdog1e.pdf

Also you might post this topic in the audio & video section of this site. You might get more answers there. Audio & Video Systems, Navigation, Satellite Radio and Mobile Electronics - Ford Truck Enthusiasts Forums

Jul 24, 2008 | 12:02 AM

Expansivebandvan

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Joined: Mar 2008

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Your amplifier is mounted to the sub enclosure behind the right rear panel in front of the jack.

Just an FYI, DO NOT pry the cover off from the front!!!!! You WILL NOT be able to access the amp or remove the sub by just removing that panel, and the tabs need to be pushed out from the rear in order to re-assemble it properly.

as a shortcut you can access the plugs to the amplifier & speaker for testing by popping out the cup holder (third row passenger) on top of that panel. Check for power and remote signals at the plug.

There is no "reset" on the amplifier. What I have seen most often is the weak foam surround separates from the paper cone which results in a huge loss of output.

Jul 24, 2008 | 05:00 AM

Woody1255

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Joined: Jul 2008

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WCB, Exactly like EBV stated above, the foam deteriorates and suddenly your bass is gone. Kinda a pain to remove the enclosure. (but REQUIRED, to remove the center speaker bolt from the rear into the magnet) Ford has a replacement for this speaker. It was around $80 a couple of years ago. DO NOT try the USED, junkyard approach, It is a waste of money, Anything you find that will work is "As old as yours" and will fail imminently!